摘要:
An apparatus for sensing movement of a point rail away from a stock rail by a selected distance, by closing a switch to shunt a track circuit, with means for resetting the apparatus to open the switch only after manual resetting of the point rail.
摘要:
An apparatus is provided for sensing movement of a point rail away from a stock rail by a selected distance, by closing a switch to shunt a track circuit, with means for resetting the apparatus to open the switch only after manual resetting of the point rail.
摘要:
An apparatus for sensing movement of a point rail away from a stock rail by a selected distance, by closing a switch to shunt a track circuit. Manual resetting of the point rail is required to reset the apparatus to open the switch.
摘要:
An apparatus for sensing movement of a point rail away from a stock rail by a selected distance, by closing a switch to shunt a track circuit, with means for resetting the apparatus to open the switch only after manual resetting of the point rail.